Climate Gulli Airstrip 2020-2024

Climate and trends: average temperature, flight conditions, precipitation, wind speed and direction.

Calculated from historical METAR data of Oslo Airport, Gardermoen (ENGM) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	50.1	62	38	65	39	60
February	56.4	37	70	76	56	73
March	67.2	43	72	83	78	60
April	85.9		76	91	94	90
May	83.6		96	87	73	93
June	84.2		92	86	74	86
July	85.4		73	89	86	75
August	79.0		68	79	92	83
September	70.0		60	73	76	75
October	56.7		71	44	54	45
November	35.7		28	19	51	40
December	41.5		45	51	48	18
Average	69.1	45.8	71.2	76.0	73.4	72.6

21st best VFR conditions of Norway

VFR conditions during daylight period

Percentage of observations where the VFR minimums for ceiling and visibility are met: visibility of 8 km or more and a ceiling of 3,000 ft or more. Only observations between sunrise and sunset are taken into account.

Marginal VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	63.1	70	52	74	55	71
February	71.8	61	78	88	60	85
March	79.4	69	80	87	82	76
April	92.2		88	95	97	94
May	92.8		97	96	88	96
June	93.9		98	95	91	97
July	95.2		92	96	96	90
August	92.4		87	94	98	90
September	87.5		81	90	85	89
October	76.9		87	67	75	74
November	63.3		72	53	78	61
December	59.3		71	83	69	34
Average	82.9	66.4	85.4	88.2	85.1	84.5

Marginal VFR conditions or better during daylight period

Percentage of observations where the MVFR minimums for ceiling and visibility are met: visibility of 5 km or more and a ceiling of 1,000 ft or more. Only observations between sunrise and sunset are taken into account.

Maximum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	-2.6	-5	-1	1	-5	4
February	0.0	-1	2	2	-3	4
March	3.7	3	2	7	6	5
April	9.7		9	10	9	11
May	15.2		16	15	13	14
June	20.9		23	21	21	23
July	21.3		19	21	23	18
August	19.6		18	21	19	21
September	15.1		17	14	16	16
October	8.8		7	10	11	9
November	2.9		-1	5	4	6
December	-2.3		-4	-5	-3	2
Average	8.4	-1.3	9.0	10.5	9.3	10.9

22nd highest temperature of Norway

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	-8.9	-13	-6	-5	-10	-1
February	-7.8	-6	-6	-5	-9	-3
March	-5.7	-2	-7	-4	-3	-2
April	-1.2		-1	-1	-1	1
May	4.9		4	5	5	4
June	10.7		11	11	11	12
July	11.9		11	12	14	10
August	10.6		12	11	10	11
September	7.5		9	7	7	7
October	2.7		1	3	5	4
November	-2.4		-4	1	-2	1
December	-7.6		-10	-10	-8	-1
Average	0.8	-7.0	1.3	2.4	1.6	3.5

17th lowest temperature of Norway

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	26.2	27	34	11	27	17
February	21.5	34	10	11	18	16
March	16.5	27	15	4	13	16
April	11.4		24	8	7	10
May	14.4		5	14	26	10
June	10.6		6	10	8	13
July	11.9		19	10	12	22
August	12.4		25	5	5	10
September	15.8		19	13	10	13
October	20.0		17	22	22	23
November	30.9		38	45	16	16
December	35.3		33	30	26	68
Average	17.8	29.2	17.9	12.5	14.4	16.5

Precipitation during daylight period

Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.

Wind speed (knots)

Month	Average	2024	2023	2022	2021	2020
January	5.3	6	5	6	5	8
February	6.1	6	5	7	6	9
March	6.4	6	6	5	7	10
April	6.7		6	7	9	8
May	6.9		7	8	7	7
June	6.7		6	7	7	7
July	6.4		6	7	6	7
August	6.7		6	7	7	7
September	6.7		7	6	5	8
October	6.7		7	7	8	7
November	6.1		7	6	6	6
December	4.4		5	4	4	6
Average	6.4	6.0	6.0	6.6	6.7	7.3

22nd highest wind speed of Norway

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month	2024	2023	2022	2021	2020
January	001°	191°	250°	027°	194°
February	164°	335°	189°	023°	194°
March	062°	017°	220°	198°	199°
April		026°	005°	348°	308°
May		246°	185°	027°	322°
June		150°	186°	179°	129°
July		188°	204°	117°	162°
August		098°	177°	013°	178°
September		198°	061°	138°	189°
October		017°	196°	184°	063°
November		020°	089°	171°	188°
December		026°	013°	012°	072°

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.